DAMS FOR AFRICA (PTY) LTD
Civil Engineer in Roodepoort

Water for communities Rehabilitation/construction of small dams, weirs, canals, pipelines, irrigation systems, & rain water harvesting to promote sustainable food production in communities. This includes investigations, reports, designs, proposals and business plans. Anti-theft products (These products have developed to the extent that a new company was registered in 2015, CONCRETE DOORS AND VAULTS. Materials investigations Investigation, design, & specification of materials (including waste materials) for use in concrete, roads, railway ballast etc. Abrasion resistance Assistance to paving manufacturers in making abrasion resistant products, investigations into wear related failures of paved surfaces and concrete floors. The original vision to starting the company was to build dams in rural Africa to help poor farmers become self sufficient. The company has the resources to design, build and rehbilitate small dams. Following are some examples of dam rehabilitation: Secondly canals need to be constructed to a predetermined gradient as this influences the velocity of the liquid, and hence the flow. Pipelines on the other hand can tolerate inundations, since the enclosed environment of the pipeline allows pressure to develop, and the only real requirement for flow is that there is sufficient pressure at the start of the pipeline to overcome friction losses and elevational differences. (The other factors that have a major influence on flow in both pipes and pipelines are the cross sectional area and the roughness). An advantage of canals is that the flow is clearly visible all along the length of the canal and it is relatively easily to measure this flow. In the event of a reduction in flow between point A and B, the water may be diverted elsewhere, and the canal inspected for cracks etc. It is also a simple matter to divert water out of a canal and into a furrow for purposes of flood irrigation for example. On the other hand canals are subject to evaporation losses whereas this is not the case with pipelines, but if pipelines become blocked this may present a major problem, while in the case of a canal all that is required to remove the blockages is a shovel. Following are some examples of some small canals have been constructed/rehabilitated for use by rural farmers. Rehabilitation of stone masonry canal (article to follow)